Evaluation Key Point:
The point of this question is to test you on the following:
- Do you define best friends.
- Do you provide precise metric based on your best friend definition.
- Is your measurement from a data science perspective.
Answer Structure:
Let’s break down this question into three steps:
- Define best friend as you like.
- Find items measure your definition.
- Create metrics by combining items above statistically.
Sample Answer:
Best friends can be two users that interact most frequently on social network.
In order to measure it, let’s brainstorm possible metrics for each user. Some metrics can be:
- Number of shared connection
- Number of group photos
- Number of comments made.
After that, pick a similarity measure in statistics quantifies the closeness of two users. Some of the options are:
- Cosine Similarity
- Euclidean distance
- Jacquard Similarity